Performance criteria for heat resistance, aging and ozone resistance. Good quality valve stems conform to SAE Standards that set the There is usually no name or marking on these valve stems so there is no traceability InĪddition, many manufacturers do not carry any product liability insurance. Valves varies from manufacturer to manufacturer and from shipment to shipment. Offshore valves have been coming into the USĪnd Europe for the last few years and are inexpensively priced. Temperature range of -65☏ (-54☌) and 250☏ (121☌) and is designed more for use inīut I have also found Red cores in both motorcycle and automobile tires.īe aware that many fleets specify that their valve stem purchases are only from NorthĪmerican or European manufacturers. The high temperature core usually has a red seal and has a Standard valve core usually has a black seal with a temperature range of between -65☏ Passenger valve stems with the main difference being the temperature rating. It must be in good working order with no debris within it.ĭebris would not allow the core to seal properly. Valve Cores – the valve core allows the air pressure within the tire and wheelĪssembly to be adjusted. The new one seemed to fit and hold air, but I'd hate to find out on the highway at 80MPH that it wasn't a good fit. And the ends were slightly different.Īre there any real, functional differences between cores? The bad one had an orange colored band around the barrel, the one from AZ had a black band. The one I pulled looked a little different than the one from AutoZone. I bought some cores at AutoZone and replaced the core. The front tire on my '00 R1100RT was leaking air at the valve, around the core.
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